Educated "estimates" for an efficient powder for my wildcat?

[DrMike]

My bad. I'm hurrying to catch the VP debates.

Cartridge : .350 Rem. Mag.
Bullet : .358, 225, Nosler BalTip 35225
Useable Case Capaci: 43.900 grain H2O = 2.850 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 8208 XBR

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 88 35.60 1966 1931 30472 4646 87.6 1.468
-18.0 90 36.49 2014 2026 32549 4792 88.8 1.429
-16.0 92 37.38 2062 2124 34775 4934 90.0 1.391
-14.0 95 38.27 2110 2224 37160 5071 91.0 1.354
-12.0 97 39.16 2158 2326 39720 5205 92.1 1.314
-10.0 99 40.05 2206 2431 42470 5333 93.0 1.276
-08.0 101 40.94 2254 2538 45428 5456 94.0 1.239
-06.0 103 41.83 2302 2648 48611 5573 94.8 1.204
-04.0 106 42.72 2350 2760 52035 5683 95.6 1.170
-02.0 108 43.61 2399 2874 55702 5787 96.3 1.137 ! Near Maximum !
+00.0 110 44.50 2447 2991 59651 5883 97.0 1.105 ! Near Maximum !
+02.0 112 45.39 2495 3110 63920 5972 97.6 1.075 !DANGEROUS LOAD-DO NOT USE!
+04.0 114 46.28 2543 3231 68542 6052 98.1 1.045 !DANGEROUS LOAD-DO NOT USE!
+06.0 117 47.17 2591 3355 73554 6123 98.6 1.016 !DANGEROUS LOAD-DO NOT USE!
+08.0 119 48.06 2640 3481 79003 6186 99.0 0.988 !DANGEROUS LOAD-DO NOT USE!
+10.0 121 48.95 2688 3609 84939 6238 99.3 0.961 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 110 44.50 2557 3267 71253 5800 99.8 1.032 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 110 44.50 2301 2644 48593 5695 90.6 1.201

Cartridge : .350 Rem. Mag.
Bullet : .358, 225, Nosler BalTip 35225
Useable Case Capaci: 43.900 grain H2O = 2.850 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 54570 psi, or 376 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Accurate 2520 110.0 45.9 2.97 2408 97.6 51926 5949 1.160
Accurate 2460 103.3 44.9 2.91 2390 97.2 54570 5739 1.158 ! Near Maximum !

 

[350JR]

ok. I very much apprecite the help but do not understand why a program would give the same case capacity (usable) for a bullet seated down into the body .375" as the same round with the bullet NOT seated down into the round.

Evidently those values must be put into the program. Id think the "usable" capacity would be to the bottom of the neck (approx 50 grains give or take) when seated with a COAL of 2.8 as I have mine and would offer info on that.

My apologies.

The last is still of much value for starting loads.
God Bless and thanks again
steve

 

[Oldtrader3]

Would IMR 4007 SSC deliver the same performance.?

 

[Polaris]

Win 748, IMR 3031 and H335 are old standbys in .35 rounds with similar geometry.

BLC-2, IMR 4064 or IMR 4320 might be worth a shot also.

 

[DrMike]

I just got back from watching the debates. I posted the wrong data in the first instance. Here is the corrected data for the 350 Remington Magnum.

Cartridge : .350 Rem. Mag.
Bullet : .358, 225, Nosler BalTip 35225
Useable Case Capaci: 54.341 grain H2O = 3.528 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 8208 XBR

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 82 41.20 2096 2195 31594 5601 91.2 1.441
-18.0 84 42.23 2145 2298 33673 5764 92.3 1.404
-16.0 86 43.26 2194 2405 35865 5923 93.2 1.368
-14.0 88 44.29 2243 2513 38187 6076 94.2 1.331
-12.0 90 45.32 2292 2624 40659 6223 95.0 1.294
-10.0 93 46.35 2340 2736 43292 6363 95.8 1.257
-08.0 95 47.38 2389 2851 46099 6497 96.5 1.222
-06.0 97 48.41 2437 2968 49092 6623 97.2 1.189
-04.0 99 49.44 2486 3087 52285 6741 97.8 1.156
-02.0 101 50.47 2534 3207 55695 6851 98.3 1.125 ! Near Maximum !
+00.0 103 51.50 2582 3330 59338 6952 98.8 1.095 ! Near Maximum !
+02.0 105 52.53 2629 3454 63236 7043 99.1 1.066 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 53.56 2677 3580 67410 7125 99.5 1.038 !DANGEROUS LOAD-DO NOT USE!
+06.0 109 54.59 2724 3708 71884 7196 99.7 1.011 !DANGEROUS LOAD-DO NOT USE!
+08.0 111 55.62 2771 3838 76688 7258 99.9 0.985 !DANGEROUS LOAD-DO NOT USE!
+10.0 113 56.65 2818 3968 81852 7308 100.0 0.959 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 103 51.50 2684 3598 70184 6738 100.0 1.025 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 51.50 2441 2976 48842 6846 93.8 1.187

The data for the 350 JR is as follows:
Cartridge : .350 JR
Bullet : .358, 225, Nosler BalTip 35225
Useable Case Capaci: 43.900 grain H2O = 2.850 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 8208 XBR

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 88 35.60 1966 1931 30472 4646 87.6 1.468
-18.0 90 36.49 2014 2026 32549 4792 88.8 1.429
-16.0 92 37.38 2062 2124 34775 4934 90.0 1.391
-14.0 95 38.27 2110 2224 37160 5071 91.0 1.354
-12.0 97 39.16 2158 2326 39720 5205 92.1 1.314
-10.0 99 40.05 2206 2431 42470 5333 93.0 1.276
-08.0 101 40.94 2254 2538 45428 5456 94.0 1.239
-06.0 103 41.83 2302 2648 48611 5573 94.8 1.204
-04.0 106 42.72 2350 2760 52035 5683 95.6 1.170
-02.0 108 43.61 2399 2874 55702 5787 96.3 1.137 ! Near Maximum !
+00.0 110 44.50 2447 2991 59651 5883 97.0 1.105 ! Near Maximum !
+02.0 112 45.39 2495 3110 63920 5972 97.6 1.075 !DANGEROUS LOAD-DO NOT USE!
+04.0 114 46.28 2543 3231 68542 6052 98.1 1.045 !DANGEROUS LOAD-DO NOT USE!
+06.0 117 47.17 2591 3355 73554 6123 98.6 1.016 !DANGEROUS LOAD-DO NOT USE!

As you can see, the values are quite different. I should not have attempted to answer when I was distracted. Mea Culpa.
+08.0 119 48.06 2640 3481 79003 6186 99.0 0.988 !DANGEROUS LOAD-DO NOT USE!
+10.0 121 48.95 2688 3609 84939 6238 99.3 0.961 !DANGEROUS LOAD-DO NOT USE!